Well-packer.



H. G. BREWSTER.

WELL PAGKER.

APPLICATION FILED MAY 9, 1913. 1,090,019. Patented Mar. 10, 1914.

lhil/l/ H 111 WW1 ill a iii? 4 1 L HARRY C. BREWSTER, OF SHREVEPORT,LOUISIANA.

WELL-PACKER.

Specification of Letters Patent. Patented Mar, 10, 1914,-

Application filed'May 9, 1913. Serial No. 766,652.

To all whom it may concern Be it known that I, HARRY C. BREWSTER, acitizen of the United States, residing at Shreveport, in the parish ofCaddo and State of Louisiana, have invented certain new and usefulImprovements in Well-Packers; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to improvements in well packers, and it consists inthe constructions, combinations and arrangements here in described andclaimed.

An object of my invention is to provide an improved ex ansible packer ofcanvas, or similar materia adapted to be set for efficiently packing insoft formations.

A further object of my invention is to provide an improved well packerconstructed to permit of the ready setting of a series of packers withina well.

In the accompanying drawings formin a part of this application and inwhich simi ar.

reference symbols indicate corresponding parts .in the several views:Figure 1 is a vertical axial section, illustrating one embodiment of myinvention with the relatively'movable parts detachably secured to getherfor insertion in a well; Fig. 2 is a similar view, showing therelatively movable parts released and in telescoped relation for settingthe packer; and Fig. 3 is a section on the line 33-of Fig. 2. Referringto the drawings, 1 indicates a tubular member, which can be screwed, or

otherwise rigidly attached, at its lower end to the well tubing in ausual manner. A collar 2 is rlgidly secured to the upper end of saidmember 1 and provided with internal threads 3 adapted to screw on ashort threaded portion 4 of a tubular plunger 5;

' said plunger 5 being adapted to telescope through the collar 2 andtubular memberl u on being screwed through said collar.

he plunger 5 has a collar 6 rigidly secured to its upper end, which isprovided with a threaded portion. 7 adapted to be screwed to the upperline of well tubing 8, or to the tubular member 1 of a duplicate packer.

A packing 9 is mounted on the plunger 5 in position to be engaged by thecollars 2 and 6 for expanding the packing 9 when said plunger istelescoped within the tubular member 1. The plunger 5 is provided withpins 10 adapted to engage lugs 11 on the inner periphery of the tubularmember 1 in the telescoped position of said plunger, for locking saidplunger against further righthand rotation when the latter has beenscrewed through the threaded collar 2 and telescoped within saidmember 1. This provides a simple and efficient means for positivelylocking the telescoped plunger against right-hand rotation in order topermit a se ries of connected packers to be set in a well.

I have illustrated and described preferred and satisfactoryconstructions, but changes could be made within the spirit and scope ofmy invention.

I claim:

1. In a well packer, the combination of a tubular member, an internalthreaded collar on said member, a tubular plunger threaded in saidcollar and adapted to telescope through said collar and tubular member,an

exterior collar on said tubular plunger, an expansible packing mountedbetween said collars of said member and plunger, and c0- operating meanson said member and plunger for locking the latter against rotation inone direction when telescoped within said tubular member. I

2. In a well packer, the combination of a tubular member, an internalthreaded collar on said member, a tubular plunger threaded in saidcollar and adapted to telescope through said collar and tubular member,an exterior collar on saidtubular plunger, an expansible packing mountedbetween said collars of 'said member and plunger, and

lugs and pins on said member and plunger--

